add calling of invert_m4_m4

client/ultragrid/ultragrid.cpp

@@ -165,9 +165,24 @@ struct cesnet_shm {
 
 void cesnet_set_inverse_matrix(float* transform_inverse_view_matrix, float* position, float *orientation)
 {
-    float view_mat[4][4];
+    float view_mat[4][4], iview_mat[4][4];
     quat_to_mat4(view_mat, orientation);
     copy_v3_v3(view_mat[3], position);
+    invert_m4_m4(iview_mat, view_mat);
+
+    transform_inverse_view_matrix[0] = iview_mat[0][0];
+    transform_inverse_view_matrix[1] = iview_mat[0][1];
+    transform_inverse_view_matrix[2] = iview_mat[0][2];
+    transform_inverse_view_matrix[3] = iview_mat[0][3];
+    transform_inverse_view_matrix[4] = iview_mat[1][0];
+    transform_inverse_view_matrix[5] = iview_mat[1][1];
+    transform_inverse_view_matrix[6] = iview_mat[1][2];
+    transform_inverse_view_matrix[7] = iview_mat[1][3];
+    transform_inverse_view_matrix[8] = iview_mat[2][0];
+    transform_inverse_view_matrix[9] = iview_mat[2][1];
+    transform_inverse_view_matrix[10] = iview_mat[2][2];
+    transform_inverse_view_matrix[11] = iview_mat[2][3];
+
 }
 
 // camera view matrix